CA2551505A1 - Network dependent signal processing - Google Patents
Network dependent signal processing Download PDFInfo
- Publication number
- CA2551505A1 CA2551505A1 CA002551505A CA2551505A CA2551505A1 CA 2551505 A1 CA2551505 A1 CA 2551505A1 CA 002551505 A CA002551505 A CA 002551505A CA 2551505 A CA2551505 A CA 2551505A CA 2551505 A1 CA2551505 A1 CA 2551505A1
- Authority
- CA
- Canada
- Prior art keywords
- end terminal
- near end
- network
- far end
- far
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/002—Applications of echo suppressors or cancellers in telephonic connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
Abstract
A system processes signals exchanged between a near end terminal and a far e nd terminal over a communication path. The system selects the processing characteristics of a near end terminal based on characteristics of the communication path. The communication path may include the near and the far end terminal and their respective codecs, and the networks. The system may select processing characteristics of the near end terminal based on characteristics of the communication path. Selecting the processing characteristics may include selecting a predetermined operation. The systems may adapt a selecte d operation based on a real time analysis of the communication path.
Claims (20)
1. A method for processing signals exchanged over a communication path between a near end terminal and a far end terminal, the method comprising:
identifying one or more characteristics of the communication path; and, selecting processing characteristics for the near end terminal based on the identified characteristics.
identifying one or more characteristics of the communication path; and, selecting processing characteristics for the near end terminal based on the identified characteristics.
2. A method according to claim 1 where identifying one or more characteristics comprises detecting processing characteristics of the near end terminal, a near end codec associated with the near end terminal, a near end network which provides a communication signal to and from the near end terminal, the far end terminal, a far end codec associated with the far end terminal, and a far end network which provides a communication signal to and from the far end terminal.
3. A method according to claim 2 where detecting processing characteristics of the near end terminal, the far end terminal, the near end network and the far end network comprises detecting at least one of a noise reduction and a noise cancellation.
4. A method according to claim 2 where detecting processing characteristics of the near end network and the far end network comprises detecting at least one of a noise gating and a bit rate of the near end network or the far end network.
5. A method according to claim 2 where detecting processing characteristics of the far end network comprises analyzing characteristics of a far side echo prior to removal of the far side echo from an incoming signal received at the near end terminal.
6. A method according to claim 1 where identifying one or more characteristics comprises at least one of:
detecting less than full-duplex operation of a two way signal on the communication path;
making an approximation of an input signal at the far end terminal and comparing the approximation of the input signal to an incoming signal received at the near end terminal;
and, using an engineering mode of at least one of the near end terminal and the far end terminal to access information about the characteristics of the communication path.
detecting less than full-duplex operation of a two way signal on the communication path;
making an approximation of an input signal at the far end terminal and comparing the approximation of the input signal to an incoming signal received at the near end terminal;
and, using an engineering mode of at least one of the near end terminal and the far end terminal to access information about the characteristics of the communication path.
7. A method according to claim 1 where the communication path comprises a base station and a mobile telephone switching office, the method comprising receiving information about the communication path from at least one of the far end terminal, the base station and the mobile telephone switching office, where selection of the processing characteristics is based on the received information and the identified characteristics.
8. A method according to claim 7 where the received information includes at least one of:
information about processing characteristics of at least one of the far end terminal and the near end terminal;
information about processing characteristics of at least one of a far end codec and a near end codec;
information about at least one of a type, a network identification, and a field strength of a near end network which provides a communication signal to and from the near end terminal; and information about at least one of a type, a network identification and a field strength of a far end network which provides a communication signal to and from the far end terminal.
information about processing characteristics of at least one of the far end terminal and the near end terminal;
information about processing characteristics of at least one of a far end codec and a near end codec;
information about at least one of a type, a network identification, and a field strength of a near end network which provides a communication signal to and from the near end terminal; and information about at least one of a type, a network identification and a field strength of a far end network which provides a communication signal to and from the far end terminal.
9. A method according to claim 1 comprising:
providing information about the identified characteristics to the far end terminal; and, selecting processing characteristics for the far end terminal based on the provided information.
providing information about the identified characteristics to the far end terminal; and, selecting processing characteristics for the far end terminal based on the provided information.
10. A method according to claim 9 where the provided information includes at least one of:
information about processing characteristics of at least one of the near end terminal, a near end codec, the far end terminal and a far end codec;
information about at least one of a type, a network identification and a field strength of a near end network which provides a communication signal to and from the near end terminal;
information about at least one of a type, a network identification and a field strength of a far end network which provides a communication signal to and from the far end terminal.
information about processing characteristics of at least one of the near end terminal, a near end codec, the far end terminal and a far end codec;
information about at least one of a type, a network identification and a field strength of a near end network which provides a communication signal to and from the near end terminal;
information about at least one of a type, a network identification and a field strength of a far end network which provides a communication signal to and from the far end terminal.
11. A method according to claim 1 where selecting processing characteristics for the near end terminal comprises selecting a predetermined operation mode for the near end terminal.
12. A method according to claim 11 where selecting a predetermined operation mode for the near end terminal comprises selecting one of a plurality of predetermined operation modes corresponding to a known far side configuration having characteristics closest to the identified characteristics.
13. A method according to claim 11 where selecting processing characteristics for the near end terminal comprises adaptation of the predetermined operation mode based on real time queries of the characteristics of the communication path.
14. A method according to claim 13 where adaptation of the predetermined operation mode comprises at least one of:
adaptation of noise reduction or noise cancellation processing characteristics of the near end terminal based on the real time queries of a bit rate of a CDMA
network upon determining the bit rate to have been degraded for more than a predetermined length of time;
reducing or removing an effect of noise gating interacting with the processing characteristics of the near end terminal, upon identifying noise gating on a near end network which provides a communication signal to and from the near end terminal and a far end network which provides a communication signal to and from the far end terminal; and, adaptation of noise reduction or noise cancellation processing characteristics of the near end terminal upon detection of significant noise reduction or noise cancellation on at least one of the near end terminal, the far end terminal, a near end network which provides a communication signal to and from the near end terminal and a far end network which provides a communication signal to and from the far end terminal.
adaptation of noise reduction or noise cancellation processing characteristics of the near end terminal based on the real time queries of a bit rate of a CDMA
network upon determining the bit rate to have been degraded for more than a predetermined length of time;
reducing or removing an effect of noise gating interacting with the processing characteristics of the near end terminal, upon identifying noise gating on a near end network which provides a communication signal to and from the near end terminal and a far end network which provides a communication signal to and from the far end terminal; and, adaptation of noise reduction or noise cancellation processing characteristics of the near end terminal upon detection of significant noise reduction or noise cancellation on at least one of the near end terminal, the far end terminal, a near end network which provides a communication signal to and from the near end terminal and a far end network which provides a communication signal to and from the far end terminal.
15. A method according to claim 14 where adaptation of noise reduction or noise cancellation processing characteristics of the near end terminal comprises at least one of:
adaptive modification of various signal processing algorithms to provide a processing with a noise reduction or a noise cancellation; and, modification of various signal processing algorithms to those configured for use with communication paths in which a noise reduction or noise cancellation is performed beyond the near end terminal.
adaptive modification of various signal processing algorithms to provide a processing with a noise reduction or a noise cancellation; and, modification of various signal processing algorithms to those configured for use with communication paths in which a noise reduction or noise cancellation is performed beyond the near end terminal.
16. A method according to claim 15 where the modified algorithms include decreasing the noise reduction or decreasing the noise cancellation at the near end terminal.
17. A method according to claim 14 comprising adding energy into a communication signal.
18. A method according to claim 8 where, if at least one of the near end network and far end network is a CDMA network, then selecting processing characteristics for the near end terminal comprises adaptively modifying a processing algorithm to adjust for noise gating and bit rate degradation.
19. A method according to claim 8 where, if at least one of the near end network: and far end network is a GSM network, then selecting processing characteristics for the near end terminal comprises adaptively removing GSM artifacts.
20. A method according to claim 8 where, if the network identification of at least one of the near end network and far end network corresponds to a network that exhibits significant noise reduction or noise cancellation, selecting processing characteristics for the near end terminal comprises applying a reduced amount of noise reduction or noise cancellation.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70406505P | 2005-07-28 | 2005-07-28 | |
| US60/704,065 | 2005-07-28 | ||
| US11/218,742 | 2005-09-02 | ||
| US11/218,742 US7724693B2 (en) | 2005-07-28 | 2005-09-02 | Network dependent signal processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2551505A1 true CA2551505A1 (en) | 2007-01-28 |
| CA2551505C CA2551505C (en) | 2012-09-04 |
Family
ID=37137476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2551505A Active CA2551505C (en) | 2005-07-28 | 2006-07-05 | Network dependent signal processing |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7724693B2 (en) |
| EP (1) | EP1748633A1 (en) |
| JP (1) | JP2007037116A (en) |
| KR (1) | KR101262381B1 (en) |
| CN (1) | CN1913521B (en) |
| CA (1) | CA2551505C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8326614B2 (en) * | 2005-09-02 | 2012-12-04 | Qnx Software Systems Limited | Speech enhancement system |
| US9207876B2 (en) * | 2007-04-19 | 2015-12-08 | Microsoft Technology Licensing, Llc | Remove-on-delete technologies for solid state drive optimization |
| US8326617B2 (en) * | 2007-10-24 | 2012-12-04 | Qnx Software Systems Limited | Speech enhancement with minimum gating |
| US8606566B2 (en) * | 2007-10-24 | 2013-12-10 | Qnx Software Systems Limited | Speech enhancement through partial speech reconstruction |
| US8015002B2 (en) | 2007-10-24 | 2011-09-06 | Qnx Software Systems Co. | Dynamic noise reduction using linear model fitting |
| US8606573B2 (en) * | 2008-03-28 | 2013-12-10 | Alon Konchitsky | Voice recognition improved accuracy in mobile environments |
| US9037113B2 (en) | 2010-06-29 | 2015-05-19 | Georgia Tech Research Corporation | Systems and methods for detecting call provenance from call audio |
| US20150327035A1 (en) * | 2014-05-12 | 2015-11-12 | Intel Corporation | Far-end context dependent pre-processing |
| US10091349B1 (en) | 2017-07-11 | 2018-10-02 | Vail Systems, Inc. | Fraud detection system and method |
| US10623581B2 (en) | 2017-07-25 | 2020-04-14 | Vail Systems, Inc. | Adaptive, multi-modal fraud detection system |
| KR102443637B1 (en) | 2017-10-23 | 2022-09-16 | 삼성전자주식회사 | Electronic device for determining noise control parameter based on network connection inforiton and operating method thereof |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4760596A (en) * | 1986-02-25 | 1988-07-26 | Gte Laboratories Incorporated | Adaptive echo cancellation and equalization system signal processor and method therefor |
| US5223847A (en) * | 1990-08-13 | 1993-06-29 | Minter Jerry B | Pilot warning system |
| JPH07123236B2 (en) * | 1992-12-18 | 1995-12-25 | 日本電気株式会社 | Bidirectional call state detection circuit |
| US5483551A (en) * | 1993-07-30 | 1996-01-09 | At&T Corp. | Crosstalk suppression technique |
| US5546459A (en) * | 1993-11-01 | 1996-08-13 | Qualcomm Incorporated | Variable block size adaptation algorithm for noise-robust acoustic echo cancellation |
| US5659581A (en) * | 1994-12-13 | 1997-08-19 | Paradyne Corporation | Modem receiver pre-emphasis |
| US5561668A (en) * | 1995-07-06 | 1996-10-01 | Coherent Communications Systems Corp. | Echo canceler with subband attenuation and noise injection control |
| US6011804A (en) * | 1995-12-20 | 2000-01-04 | International Business Machines Corporation | Dynamic bandwidth reservation for control traffic in high speed packet switching networks |
| FI106489B (en) * | 1996-06-19 | 2001-02-15 | Nokia Networks Oy | Eco-muffler and non-linear processor for an eco extinguisher |
| US6044068A (en) * | 1996-10-01 | 2000-03-28 | Telefonaktiebolaget Lm Ericsson | Silence-improved echo canceller |
| WO1998032065A2 (en) * | 1997-01-03 | 1998-07-23 | Fortress Technologies, Inc. | Improved network security device |
| US5995512A (en) * | 1997-01-17 | 1999-11-30 | Delco Electronics Corporation | High speed multimedia data network |
| US5784361A (en) * | 1997-01-31 | 1998-07-21 | Coherent Communications Systems Corp. | Bi-directional asynchronous telecommunication audio signal processing |
| US5991292A (en) * | 1997-03-06 | 1999-11-23 | Nortel Networks Corporation | Network access in multi-service environment |
| US6771629B1 (en) | 1999-01-15 | 2004-08-03 | Airbiquity Inc. | In-band signaling for synchronization in a voice communications network |
| US6493338B1 (en) | 1997-05-19 | 2002-12-10 | Airbiquity Inc. | Multichannel in-band signaling for data communications over digital wireless telecommunications networks |
| US6690681B1 (en) | 1997-05-19 | 2004-02-10 | Airbiquity Inc. | In-band signaling for data communications over digital wireless telecommunications network |
| US6292559B1 (en) * | 1997-12-19 | 2001-09-18 | Rice University | Spectral optimization and joint signaling techniques with upstream/downstream separation for communication in the presence of crosstalk |
| DE19815942A1 (en) * | 1998-04-09 | 1999-10-14 | Cit Alcatel | Multi-channel Echo Canceller with Compander |
| US6628779B1 (en) * | 1998-05-11 | 2003-09-30 | Telcordia Technologies, Inc. | Method and system for scaleable near-end speech cancellation for tip and ring tone signal detectors |
| US6618385B1 (en) * | 1998-09-23 | 2003-09-09 | Cirrus Logic, Inc. | High performance, high bandwidth, and adaptive local area network communications |
| US6285660B1 (en) * | 1999-07-15 | 2001-09-04 | At&T Corp. | User network control |
| DE10000009A1 (en) * | 2000-01-03 | 2001-07-19 | Alcatel Sa | Echo signal reduction-correction procedure for telecommunication network, involves detecting quality values of each terminal based on which countermeasures for echo reduction is estimated |
| US6741874B1 (en) * | 2000-04-18 | 2004-05-25 | Motorola, Inc. | Method and apparatus for reducing echo feedback in a communication system |
| US6961422B2 (en) * | 2001-12-28 | 2005-11-01 | Avaya Technology Corp. | Gain control method for acoustic echo cancellation and suppression |
| US7142533B2 (en) * | 2002-03-12 | 2006-11-28 | Adtran, Inc. | Echo canceller and compression operators cascaded in time division multiplex voice communication path of integrated access device for decreasing latency and processor overhead |
| US7366161B2 (en) * | 2002-03-12 | 2008-04-29 | Adtran, Inc. | Full duplex voice path capture buffer with time stamp |
| EP1394976A1 (en) * | 2002-08-30 | 2004-03-03 | Alcatel | Channel power control method in WDM system |
| WO2006116008A2 (en) * | 2005-04-21 | 2006-11-02 | Viasat, Inc. | Method and apparatus for communication among facsimile machines over digitally compressed audio channels and discrimination of call type |
| US8606566B2 (en) | 2007-10-24 | 2013-12-10 | Qnx Software Systems Limited | Speech enhancement through partial speech reconstruction |
| US8015002B2 (en) | 2007-10-24 | 2011-09-06 | Qnx Software Systems Co. | Dynamic noise reduction using linear model fitting |
-
2005
- 2005-09-02 US US11/218,742 patent/US7724693B2/en active Active
-
2006
- 2006-07-05 CA CA2551505A patent/CA2551505C/en active Active
- 2006-07-10 JP JP2006189633A patent/JP2007037116A/en not_active Withdrawn
- 2006-07-11 EP EP06014408A patent/EP1748633A1/en not_active Withdrawn
- 2006-07-21 CN CN2006101077345A patent/CN1913521B/en active Active
- 2006-07-21 KR KR1020060068276A patent/KR101262381B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007037116A (en) | 2007-02-08 |
| EP1748633A1 (en) | 2007-01-31 |
| KR20070014980A (en) | 2007-02-01 |
| KR101262381B1 (en) | 2013-05-08 |
| CA2551505C (en) | 2012-09-04 |
| CN1913521B (en) | 2012-02-08 |
| US7724693B2 (en) | 2010-05-25 |
| US20070025281A1 (en) | 2007-02-01 |
| CN1913521A (en) | 2007-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2551505A1 (en) | Network dependent signal processing | |
| US4712235A (en) | Method and apparatus for improved control and time sharing of an echo canceller | |
| US7729275B2 (en) | Method and apparatus for non-intrusive single-ended voice quality assessment in VoIP | |
| US8311817B2 (en) | Systems and methods for enhancing voice quality in mobile device | |
| EP1958341B1 (en) | Echo detection | |
| CA2117587A1 (en) | System for adaptively reducing noise in speech signals | |
| US8631295B2 (en) | Error concealment | |
| CN105792259A (en) | 3G communication control method of intelligent terminal | |
| EP2664062B1 (en) | A method and an apparatus for voice quality enhancement | |
| IL155629A0 (en) | Method and apparatus for reducing transmission power in a high data rate system | |
| EP1364542B1 (en) | Method and apparatus for controlling an operative setting of a communications link | |
| KR100790366B1 (en) | Hybrid detection in mimo systems | |
| EP1109154A3 (en) | Linear predictive coding based acoustic echo cancellation | |
| WO1995028772A3 (en) | Receiving method and receiver | |
| CN102610231A (en) | Method and device for expanding bandwidth | |
| CN1822681B (en) | Erasure of DTMF signal transmitted as speech data | |
| CN116366110A (en) | Antenna selection circuit, method, electronic device, and readable storage medium | |
| US20070100611A1 (en) | Speech codec apparatus with spike reduction | |
| NL1037238C2 (en) | A method of and a device for quantifying a tone signal received in a telecommunications network. | |
| EP3536034A1 (en) | Switchover from a first communication interface to a second in order to improve the perceived quality of the communication | |
| KR100504802B1 (en) | Multi pass searcher and his control method for mobile communication terminal | |
| KR100890708B1 (en) | Apparatus and method for removing residual noise | |
| KR100369647B1 (en) | Gain controlling methode for analyzing of hand-free function | |
| Lai et al. | The Perceptually Quality Enhancement Strategy of Mobile Transmission System via the Watermark Channel Indexing and HVS-based Bit Allocation Technology | |
| Lai | Dynamic perceptual quality control strategy for mobile multimedia transmission via watermarking index |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |